SOLUTION: Help on solving work problem: Jose can mow 15 lawns in 5 hours. Dave can mow the same 15 lawns in 7.5 hours. How long would it take Jose & Dave to mow & trim the 15 lawns if they w

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Question 796954: Help on solving work problem: Jose can mow 15 lawns in 5 hours. Dave can mow the same 15 lawns in 7.5 hours. How long would it take Jose & Dave to mow & trim the 15 lawns if they worked together?
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


No way to tell. You specified how long it takes the two guys to mow some lawns, but you said nothing about trimming.

If J does 15 in 5, he can do 3 in 1 hour. D can do 2 in 1 hour. Together they can mow 5 (2 + 3) in 1 hour, so they can mow 15 in 3 hours. Can't tell how much longer it will take if they trim the lawns as well.

John

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